<template>
  <div>
    <!-- 店铺图片上传 -->
    <el-upload
      ref="upload"
      :http-request="upload"
      :before-upload="beforeAvatarUpload"
      :on-preview="handlePictureCardPreview"
      :on-remove="handleRemove"
      :limit="1"
      :file-list="fileList"
      :on-success="handleSuccess"
      class="upload-demo fl"
      action="''"
      accept>
      <el-button size="mini" type="primary" round>点击上传</el-button>
    </el-upload>
    <!-- <div class="fl">
      <el-button type="primary" @click="submitUpload" size="mini" round style="margin: 70px 0 0 10px;">提 交</el-button>
    </div> -->
    <div class="clear"/>
    <el-dialog :visible.sync="dialogVisible">
      <img :src="dialogImageUrl" width="100%" alt="">
    </el-dialog>
  </div>
</template>

<script>
import { createId } from '@/utils/index' // 一个生产唯一的id的方法
import OSS from 'ali-oss'
import { selectOSSInfo } from '@/api/set/oss'
// oss 上传
export default {
  data() {
    return {
      uploadParams: {
        uploadPath: '',
        uploadSize: ''
      },
      fileList: [],
      dialogImageUrl: '',
      dialogVisible: false,
      imageUrl: '',
      filePath: '',
      fileName: '',
      ossData:{
        region:'',// 服务器集群地区
        accessKeyId:'',// OSS帐号
        accessKeySecret:'',// OSS 密码
        bucket:'',// 阿里云上存储的 Bucket
      }
    }
  },
  created() {
    selectOSSInfo().then(res=>{
      if(res.code==1){
        // res.data=JSON.parse(this.$base64.decode(res.data));
        this.ossData.region=res.data.oss_region;
        this.ossData.accessKeyId=res.data.oss_accessKeyId;
        this.ossData.accessKeySecret=res.data.oss_accessKeySecret;
        this.ossData.bucket=res.data.oss_backetName;
      }
  
    })
  },
  methods: {
    // 图片上传前验证
    beforeAvatarUpload(file) {
      // file.size / 1024 图片的大小
      const format = file.type === 'application/vnd.ms-excel' || 'application/vnd.openxmlformats-officedocument.wordprocessingml.document' || 'application/vnd.android.package-archive'
      this.uploadParams.uploadSize = file.size
      if (!format) {
        this.$message.error('上传格式只能是word，excel，apk格式!')
      }
      return format
    },
    // 上传图片到OSS 同时派发一个事件给父组件监听
    upload(item) {
      let type
      const client = new OSS({
        region: this.ossData.region,
        accessKeyId: this.ossData.accessKeyId,
        accessKeySecret: this.ossData.accessKeySecret,
        bucket: this.ossData.bucket
      })
      switch (item.file.type) {
        case 'application/vnd.ms-excel': {
          type = 'excel'
        } break
        case 'application/vnd.openxmlformats-officedocument.wordprocessingml.document': {
          type = 'doc'
        } break
        case 'application/vnd.android.package-archive': {
          type = 'apk'
        }
      }
      this.fileName = item.file.name
      const key = 'BCenter/time=' + new Date().getTime() + '&id=' + this.guidGenerator() + '.' + type // 存储路径，并且给图片改成唯一名字
      return client.put(key, item.file).then(res => { // OSS上传
        const url = res.url
        this.uploadParams.uploadPath = client.signatureUrl(key, { expires: 999999999999999 }) // 可访问的链接
      })
    },
    guidGenerator() {
      var S4 = function() {
        return ((1 + Math.random()) * 0X10000 | 0).toString(16).substring(1)
      }
      return (S4() + S4() + '-' + S4() + '-' + S4() + '-' + S4() + '-' + S4() + S4() + S4())
    },
    handleSuccess(res, file) {
      this.filePath = URL.createObjectURL(file.raw)
      this.fileList = []
      this.$emit('changeSrc', this.filePath, this.uploadParams.uploadPath, this.fileName)
    },
    handlePictureCardPreview(file) {
      this.dialogImageUrl = file.url
      this.dialogVisible = true
    },
    handleRemove(file, fileList) {

    }
  }
}
</script>
<style rel="stylesheet/scss" lang="scss">
.upload-demo {
  display: inline-block;
  line-height: 32px;
  margin-left: 0;
}
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.avatar-uploader .el-upload:hover {
  border-color: #2c9b69;
}
.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 60px;
  height: 60px;
  line-height: 60px;
  text-align: center;
}
.avatar {
  width: 140px;
  height: 140px;
  display: block;
}
.el-upload-list--picture-card .el-upload-list__item{
    width: 100px;
    height: 100px;
}
.el-upload--picture-card{
    width: 100px;
    height: 100px;
    line-height: 102px;
}
</style>
